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Nov.' 27, 192s, V 1,693,499

Y G. H. TREGLOWN ET AL DIRIGIBLE HEADLIGHT MECHANISM Filed 0G13. 16, 1926 `Patented Nov. 27, 1928. i

11N-Iren stares j v Laatse rete-Nit',

GEORGE HENRY TRNGLOWN `AND unav-nien cansan, oFyLoNnoN, ENGLAND; As:

srGNoas To THE connecten Liann COMPANY, Limi-run, `or LONDON, ENGLAND, A.

' CO].1IIPAI\TYA OF GREAT BRITAIN.

I DIRIGIBLE HEAD'LGHT :MIECHANISl/ll.` i

Appiiation sied october is, 192e, semaine.

This invention comprises improvements in swivellamps -foi' steerable vehicles, `such i' swivel lamps and their operating mechanisms being advantageously appliedsothat when the vehicle is stee'redto the left, 'o ne ot the lamps is turned'leftwardly about its. swivel, and when thel vehicle is steered to the right theV other lamp is turned rightwardly about its `swivel. y o .f Y 30 yThe 'principal object of this invention-is to provide improved means for enabling these swivelling lamps to' be dipped for the purpose A of lowering thebe'ams or throwing them on to the ground out of the'line of vision' of ap- 15 proaching pedestrians, cyclists, motorists and other yroad users.

`Another Objectis to providea construct-ion of combined swivelling and dipping mechanism adapted for being installed in situations wherein the use of. a straight line verticalv Y shaft is prevented by,.for example, the lamp centresv being disposed immediately above the dumb irons, or longitudinal members of the vehicle frame. Yet another Objectis-to provide a combina-.

tiony mechanism vof the character 4 indicated adapted for being installed on existing motor` vehicles with a minimum of trouble and without necessitating any structural alteration. Finally, itis an objectjof `this invention to adapt the mechanisms so that the dipping of the 4lamp may beaccomplished with the same Vfacility in: any angular .position to which the. lamp mayhave beenturned about its swivel by the steering action. noorder to enable the invention to be'readily understood reference is made to the accompanying drawing illus trating two examples of construction, in which drawing -l y l Figure l is a vertical sectional elevation of a combined lamp swivelling and dipping mechanism adapted for being mounted in an i ordinary lamp socket of the kind usually em-v ployedon motor vehicles. f Y Figure 2 is a plan section, the section being taken on the line Ill-#Hof Figure l, andv parts being broken awayto display a stop device.A Figureis avert-ical sectional'elevation of Y the upper portion of a modified construction. Figure is an elevation, to a smaller scale ofthe complete device embodying the modi-` iication ofFigure' 3.

Ythe cup o as it presses down on Z which bears upon the hub 'm fiXedfto theA 142,032, and in Great Britain April 17, 1926.

'i Referring to the construct-ion illustrated by y Figures l and 2, a is a vertically disposed tu bular casing fitted latfthe upper 'end with any enlargement or cup Z9. A cap c rotatable about the .top of the cup b carries supports CZ for a.l horizontal pivot'e uponwhichis pivotally mounted an arm or platform vg carrying a] lamp support comprising a socket The platform g moves about the pivot `with guidance between the pivot supports d, being prevented from moving' upwardly above theposition seen in Figure l byl means of any angular stop plate It secured by screws tothe vertical edges of the supports el. The cap c is formed centrally with a depending ,tubular part c 1 within which is fiiredly` secured'the upper end of a hollow shaft jrotatablewithin the casing a. `Within the lower end of thehollow shaft y' thereis iixedly secured, as by a rivet j., ay tubular partit1 the lower reduced end portion /c of which extends downv below the lower end f of the casing a and through a plain Vplug or cap Z onthelower end of the-casing. 0n the protruding end of the tubular part ci there is hxedly secured the hub mV of a lever arm m this lever arm being adaptedforbeing ene'-4 gaged by a suitable' member of the lsteering gear of the vehicle. As will bey seem-the hollow shaft j and tubular part 'le are suspended bythe cap c suitably supported as for instance i in the manner hereinafter described 'so as to l be rotatable about the top edge of the cup b,

andfatthe -same'time the cap c is prevented from .rising olf the cup Z) owing to the lower end Z6 of the part 7c beingheld by the hub m Yhearing against the cap Yspring' s may be inserted between a collar s2 riveted to the casing ct on the .interior of the Z at the bot-toin. A

latter, and the plug or cap-eZ. This spring opcrates to keep the cap,` c resiliently down onthe plug or cap stem a into the usual lamp socket on thevev hicle, the lamp ha-'ving been removed from such socket and inserted into thesocket f ofl the fitting. Withfthe fitting so mounted 'on I the vehicle, the arm m can be disposed in the path of a part or projection on the lsteering `returned; to the line-ahead position.

'lznown purpose. A spring 0 coiled around the part oi' the cap c may have one end anchored to a stud 19 in the loorv of the-cool)- and the other end anchored to a stud p pro- JeetingA downwardlyliroin the Cap o. lTl/hen the oapo is turned as aforesaid. the Coil spring 0` is' contracted" and tension/ed and so effects the4 return ofthe cap e,` shaft and arin m to theoriginal-position when the steering is stud g5 Figure', depending` from the cap o may engege-in afnoteh 7 formed in the rin-'i oi' the oup o; sothatthe end walls ot' this notch not as stops for the stud g, and the are over which the'noteh extends determines the extent of possible turningofthe Cap o and the lamp thereon. n

lvVithinthe shaft' `there is a spring. s resting with its lower end againstV the tubular part 7c and pressing with its upper end against a piston i* slidable up and dowr in the upper end of the shaft rllhe upper end of" the piston t' is Connected by a li with the' arm' g of the larnp niountingr endA the lower 'end of the piston is Connected bv a flexible conneotor or wire o wi 1h a-,suitable Control suchA as e lever on the dash board of t-hevehiele7 the wire passingI arount. idle p Substantially horizontal direction usual.-

To ea-use Le beam to dip. the wire e i towlower the piston t aga-inst the ref' the-'spring S and the'vpiston t th linlP- f 'to lowers the arm g about its thereby tilting the leinp and throvy beam downwardson to the ground' loi purpose hereinbefote explained. The sp pulle d ring sneed not be ofthe lengt-h shown, as botll it end the. shaft could be shortened and the tubular partE 7s could be l'engthened7 as will beapporent. Anti-rietional bearings, sueh' asthe hardened steel rings ai, are advantageouslv inserted between a shoulder on the tubular part oofthe cap c and the 'door oit the oup this bearing beingy effec-tive for supporting the cap e end the parts oonneoted. therewithrevolubly about the vert-i- @alA axis. lt will be noticed that, should there beve dumb iron orother vehicle part iinmedia-tely beneetirthe original lamp centre, which-is coincident. with the o nt-ral vertical axis o'l` tbesteni n wheninserted in the lainp socket, the arm: o oisets the easing @so that theflower end thereof: Clear-of neeaeee such construe-tion and there is freedom to inalre operative engagement between the afin m-ant ineinberof theisteering gear...

leeoreing to the niodilieation illustrated Figure 3, the upper part of the easing a is ipported inA a..le.n1p' braeitet. the low-er t beingw otlqseteby bendingthezeasingga' l tratedin lligure lli-this Construction, e LAeiole shaft l is Connected between the hub-mot' teoperating arin m and a Cylindrical part t dependingjllrorn the Cap c. EL shoulder formed by reducing tlle lower end ofthe cylindrical part t rtnis on a ball bearingv fe" which `takes the place oi'ltlie hardened steel/rings of Figure l'. rllhe lamp is. suit ably 'hinged e to theeap c.

i lug.l o onAJ the underside ofthe dise Sprojeots tl'irough zu vel 6' is oonneeted by -Flexible-noeans suehas ower endr of the easing' bis stayed against spring-9 is connected between the braelet'eye 8 and the arm m.' Means are einployed'tending to eonstantlj.T holdthe dise Bdown upon' the cap o sueh fer instance as by a' spring" it) eonneeted between lug 5 on the" dise" 3 and the lower part ofthe cylindlicalpa'rt t" otlthe cap 0.

The operation et the inodi'ed Construirtion is as ollowszmllhen the vehicle is steered in one direction, tlesteering gear the arm m andzturns the latter aga-ini" the action of' the spring 9, the flexibleshaift l transmitting this turning inovenientto the cylindrical partV z, so that the Cep o, dise'B' and lamp. support@pertalre oit'thisnioe- Inent7 and the linp follows the steeriin:

"pon restoring the steering gear to linev ahead, the spring' 9 returns the pk'arts'afore; said 'and the lamp also to line-ahead. Atte-ny inoinent, and, Whether the lainp hasbeen swivelled or not', itis possible to dip the: beate: j pulling` on the ileible. Connector" Qfand therebj,T lowering the innerar'in of the ylever 6 the corresponding elevation offtheotlier n oli-this lever being transmitted by the '1- 50 vtoy the dise 3 and,eausingthevlatter to tilt about itshinge l eguinstthe'aetion et'V the springj)-` 10, thereby'tilting th lamp-end loweringv the beam. hlttiurally; cushioning devieesinayfbeadopted for avoiclingslioel; to the'perts whenthe disois subsequently; loweredtbj; thel pull 'of the"springwlt),V upon rel aiing the pull? on the 'il'exible conne-eter' o.

lt. will' new beseen that these improve# nient-s provide simple"7 seht-containedand fool-:proof ineehenism, havi g its ioperartive parts enclosed and protected; and adeptedlfor:

supportedb7 ay stern Cereotedon a dise'.

; et 7 and lever 6'.' The other artnet th'e e fire o with a controlen the vehicle'. The' he vehicle trarne bYT a bracketV eye'A andfa`- `crank arm is adapted for engaging the steering mechanism of the vehicle in one direction of movement thereof to turn said hollow shaft, resilient means adapted to return said shaft after operation, a platform pivotally mounted on a substantially horizontal pivot on said carrier, means for removably supporting a lamp onsaid platform, a vspring constantly operative upon said platform,'and a flexible member extending centrally through Said'hollow shaft and operative through suitable control means for moving said platform aboutits pivot against the action of said spring. i n

2. A swivel lamp mounting for a steerable vehicle comprising a swivel mounting, a platform hingedly niountedthereon, means for removably supporting alamp on saidplatform, va depending hollow shaft connected withsaid mounting and adapted for engaging the steering gear in one direction of movement thereof to effect. swivelling of said lamp,

a lspring constantly tending to maintain said platform in a position corresponding with a normal elevation of the lamp beam, and a fiexible connector extending centrally through said hollow shaft and swivel mounting, said connector being'op'erable for movingsaidplatform about its hingeV against the laction of said spring to cause the lamp beam to'dip. Y

8. A combined lampswivelling and dipping mechanism for steerable Vvehicles comprising a swivel cap on`a tubular casing, a

hollow flexible shaft depending from said cap and extending through said casing, a platform hingedly mounted on said swivel cap, means for removably supporting a lamp on said platform, resilient means normally holding said platform against a stop, and a flexible connector extending through said hollow shaft and operable for moving said platform aboutits hinge away from the stop,V 4. A combined lamp swivelling and dip-l ping lmechanism for-steerable vehicles comprising a swivel device, a platform hingedV thereon, means for removably supporting a lamp on said platform, a spring device constantly tending to hold said swivel in a position corresponding with aline-ahead position of the lamp, a second spring device constantly dtending to holdsaid platform in a position corresponding with. normal beam-elevation,

,a flexible hollow shaft fixedly connected with said swivel, a. flexible connector disposed ceiitrally within said shaft and operatively con- I nected with saidplatform, a crank `arm on said shaft for engaging a steering gear part in one direction of movement of the latter,

and manual control means" connected withV i said connector and operative for hingedly moving said `platform against its spring to 'dip the lamp beam.

ping mechanism for steerable vehicles comprising av tubular casing mountable vertically on a vehicle, a cup on the upper end of said casing, a cap revoluble on said cup, a

platform hingedly mounted on said cap,

means for removably supporting a lamp on said platform, a spring resisting turning of: said cap in one direction, a flexible hollow shaft depending from said cap and extendextending centrally through said shaft and operatively connected with the hingedly mounted platform, and a spring resisting movement of said platform about its hinge in the direction in which it moves when said flexible connector-is .tensioned 6. A head lamp adjusting mechanism for steerable vehicles; adapted for dipping control and comprising a flexible tubular shaft,

means to rotate the latter, a 'rotary carrier operatively connected with thev shaft at its upper end, a casing enclosing said `shaft,-a spring operated platform hingedly mounted onpsaid carrier, means for removably sup- .porting a lamp on said platform, Jand flexible connector extending centrally through said flexible tubularshaft and operative upon the hinged platform to control the dipping of the lamp. GEORGE HENRY TREGLOl/VN. [11. s]

EDl/VARD CARTER. [ns] icoV 5. A combined lamp swivelling and dip- 85 l ing through said casing, a crank arm on the Y lower end4 of saidshaft, a flexible connector Y 

